Scientists have unearthed remains of a primate that could have been ancestral not only to humans but to all great apes, including chimps and gorillas. The partial skeleton of this 13-million-year-old "missing link" was found by palaeontologists working at a dig site near Barcelona in Spain. Details of the sensational discovery appear in Science magazine. The new specimen was probably male, a fruit-eater and was slightly smaller than a chimpanzee, researchers say. Palaeontologists were just getting started at the dig when a bulldozer churned up a tooth. Further investigation yielded one of the most complete ape skeletons known from...